Speaker
Description
The top quark is unique among the known quarks in that it
decays before it has an opportunity to form hadronic bound
states. This makes measurements of its properties particularly
interesting as one can access directly the properties of a bare
quark. The latest measurements of these properties are
presented. Measurements of the charge asymmetry in top-quark pair,
which probe models of physics beyond the Standard Model, are
presented; these include measurements at high invariant masses of the
ttbar system using boosted top quarks. Measurements of the top
polarisation produced either through pair process or through single
top process are discussed. The helicity of the W boson from the top
decays and the production angles of the top quark are further
discussed. Limits on the rate of flavour changing neutral currents in
the production or decay of the top quark are discussed.
The latest ATLAS measurements of the top quark mass are also
presented. A measurement using lepton+jets events is presented, where
a multi-dimensional template fit is used to constrain the
uncertainties on the energy measurements of jets. The measurements
using dilepton and all-hadronic events are also discussed. In
addition, measurements aiming to measure the mass in a well-defined
scheme are presented like the measurement using ttbar production with
an additional jet to extract the top quark mass in the pole-mass
scheme.
